Xabi Alonso claims no Premier League offers were put to him before leaving Real Madrid for Bayern Munich.
Blackpool have signed Rochdale full-back Tom Kennedy on loan, while Tangerines striker Francois Zoko has joined Bradford.
The 21-year-old, who enjoyed a brief spell on loan with Wanderers during the latter stages of the season, will sign a one-year deal.
Robinson, who primarily operates as a central midfielder, progressed through Southampton's youth academy and made his senior debut in September 2012.
"I'm really excited to get going," he said in an exclusive interview with bwfc.co.uk.
"Obviously it's going to be different after being at Southampton for so long, but I can't wait for a different challenge".